"We came here to waive jurisdiction and go back to California and to get it on. Bob Durst didn't kill Susan Berman, he's ready to end all the rumor and speculation and have a trial. But we're frustrated because local authorities are considering filing charges on him here and holding him here. We're ready to go to California and to have a trial."

3. Various exteriors of the Orleans Parish jail and the Orleans Parish Criminal District Court

ORLEANS PARISH SHERIFF'S OFFICE HANDOUT

New Orleans - 15 March 2015

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4. Booking photo provided by the Orleans Parish Sheriff's Office showing Robert Durst after his arrest in New Orleans on an extradition warrant to Los Angeles

"He is perfectly sane. He's got issues, and he's got a dark side, but he knows what he's doing. He's able to plan the crimes and he's able to plan the cover-up of the crimes and that shows a certain level of cunning that is not something an insane person is capable of doing."

Storyline

Wealthy eccentric Robert Durst agreed on Monday to face a murder charge in Los Angeles in the shooting 15 years ago of a mobster's daughter who vouched for him after his wife disappeared.

But one of his lawyers said the trip may be delayed by new charges in Louisiana. The heir to a New York real estate fortune was carrying a gun when FBI agents arrested him without incident at a New Orleans hotel over the weekend, according to a police report.

Durst's lawyer Dick DeGuerin later said outside court that the trip to California may be delayed because New Orleans prosecutors are considering other unspecified charges against him.

The hearing came only hours after Sunday's finale of an HBO documentary detailing Durst's life of privilege and links to three deaths: his friend in Los Angeles, Susan Berman; his wife in New York, Kathleen Durst; and Morris Black, an elderly neighbour in Texas.

Durst had been laying low at a Marriott hotel in New Orleans to avoid the growing attention from the documentary, his longtime lawyer, Chip Lewis, told The Associated Press.

Galveston County Judge Susan Criss, who presided over the 2003 murder trial of Morris Black, spoke out following his arrest, saying she believed he was involved in the killing of all three.

This is, by far, not the first time in handcuffs for Durst, who still has millions of dollars despite his estrangement from one of America's wealthiest families, with assets of about 4 billion US dollars.

Just last year, he was fined for urinating on the candy racks at a CVS pharmacy in Houston, where he keeps a townhouse.

Lewis called that an "unfortunate medical mishap" and said Durst has Asperger's Syndrome, an autism spectrum disorder that can involve behavioural problems.

Criss, however, said she believed he was "perfectly sane."

"He's able to plan the crimes and he's able to plan the cover-up of the crimes and that shows a certain level of cunning that is not something an insane person is capable of doing," she told the AP on Monday.